[racket] no check syntax arrows in 5.1.1

Someone, I forget who, mentioned that the Check Syntax arrows no longer 
appear in 5.1.1 under Linux (at least not for me and the other person).  
They *do* still work for me in 5.1, so this seems to be a regression in 
5.1.1.

I really like the arrows and miss them.  Can we get them back soon?

-- 
http://www.neilvandyke.org/